Talking-machine.



T. KRAEMER' TALKING MACHINE.

APPLIGATION FILED MAR. 10, 1909.

Patented June 7, 1910.

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TNVENTOR I 23 h vfiW Q4 27 WITSES:

ATTORNEY UNITED sTA srafirENT OFFICE.

THOMAS KRAEMER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HAWTHORNE & SI-IEBLE MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

TALKING-MACHIN] Specification of Letters Patent.

Application filed March 10, 1909.

Patented June '7, 1910. Serial No. 482,521.

To all whom it may concern:

Be it known that I, THOMAS KRAEMER, a citizen .of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in 'lalking-lVlachines, of which the following is a specification.

This invention relates to talking machines and particularly to machines of the type having); a reproduccr which is movable in a straight line over the souiul-rccord and a sound-eonveying member pivotally mounted at one end and connected to the reprmlueer at the other end thereof.

The object of the invention is to rti'cct certain improvements in the construction of machines of this typo, th'c in provrmcnts being directed particularly to s.'1n ')li.t'ying the construction, to the provision {of a passage for the souiul-wavcs which is domparativcly tree from bends and to reducing the cost of unanufacture Without making any sacrifice 4 in the strength of the parts of the machine or in the freedom of operation thereof.

The invention is of particular utility in amaohine employing a sound-record of cylindrical form and a reproducer movable in a straight line parallel to the axis of this cylindrical record during the reproduction of the somul-record, as in plumo'graphs of the type now commonly used. With such a' movable reproducer is employed a tone arm pivotally mounted at one and upon a supporting-arni projecting upwardly from the m'otionbox of the machines-this tone arm commun cating with an amplifying horn also .moiintedon this supporting-arm; At its free end this tone-arm is'connected' to the reproducer'and this connection is effected in such a manner as to maintain the conncction between the end of thetonc-a-rm a-ndthe reproduccr while the former is turning about a pivot and the latter moving in a straight line. For this purpose the end of the.- tone-arm is pivotally connected to a: tubular extension on the. reproducer and the tone-arin is made up of two or'morc sections which may move relatively so as to telescope more or less'duriug the operation of reprodancing at record and thus have its length increased. or diminished as may be necessary, in order to maintain the desired connect-um by allowing for the differences in the move meats. The preferred embodiment of my invcn -f tion is illustrated in the accoin ianying drawings in which Figure 1 is a sectional elevation of a. talking machine constructed in acorn-dancewit] my invention and Fig. 2 is :1V plan view ol a, portion of the machine.

Referring to these drawings, the machine comprises a motor-box 1, having therein a" motor for driving the support for the sou'ndnl fia record. The support is here shown as mandrel 2, mounted upon a shaft 3, the end' of which carries a pulley 4 on which a belt. 5 runs to transmit rotary motion from the; motor within the box to the shaft 3. Theffo shaft 3 beyond the mandrel 2 is provided. with a thread ti correspondinc in pitcli to; the thread of the record-grouse upon the cy j lindrical soundrcc iw l 7. which mounted upon the mandrel 3. The frame Set thje' 'i'o machine supports a shaft 9' upon \i-hich'is mounted the repreducer-carriage 10 and an arm 11 extendingforwardly from this carriagc has a half-nut 12 secured to its, free end and coacting with the feed-screw ti t. 9 that as shaft 3 is rotated the carriage 10 is caused to travel in the direction of the length of rod 9. The rod 9 forms apivotal support forthe carriage 10 and tlliefol'fitufgl end of the latter bears upon a. horizontal surface on the upper edge of a wall l3lfo'r. ing part of the frame 8. A lever'il t-is otally mounted upon the forWard endof't I carriage 10 so that the forward end-of the... carriage may be raised itdi'staucesuttieient"g to carry the reproducer out. of c -oaction with the sound -reeord. The'rep'rod icer, is mounted upon the carriage 10' and isfpro Ni ed with a pivotally iuounted" stylus lti adapted to track in .the record-grout" 5 formed in the sotind-reord7 and .to-actiintt,

the diaphragm of the sound-box l5.

the amplifying horn and tone-arm of: the lit-J0 This arm may be constructedin machine. any suitable manner, but the construction which I prefer to employ is that illustrated in Fig. 1 wherein the arm is shown as consistiag of two parts. 17 and 18, the former of i which .is secured to themotorbox 1 by' ping and in making repairs.

screws 19'. The part 18 is provided with lat erally extending cars at its lower end and screws 20 extend through openings in these cars and enter threaded openings in the upper end of the part 17. These parts may be readily detached for convenience in ship- At its upper end the supporting-arm has an opening formed therein and a born 21 is supported upon the upper end of the arm with the opening therethrough communicating with the opening formed in the arm.

The tone-arm 22 is pivotally mounted upon the supporting-arm with its end telescoping somewhat with the opening formed in the supporting-arm as shown in Fig. 1. Secured to the tonearm is a yoke 23 having two upwardly extending arms which lie one on either side of a flange 2-1 extending outwardly from a. sleeve 25 and a rivet 26 passing through these parts forms a pivotal connection between the flange 2-1: and arms 23. The sleeve 25 is adapted to receive a pin 27 extending upwardly from the supportingarm so as to permit the tone-arm 22 to turn freely about a vertical axis. The tone-arm 22 may be of any suitable shape but at some point in its length it is provided with telescoping parts so' 'as to permit an extension or contraction of the length of the tone-arm. Thus, I have shown the tone-arm provided with a. section 28 at its free end, which is of. smaller cross-section than the remainder of tire tone-arm and within this is a sleeve -29.which is freely'movable within the sec enlarged end 30 of -a curvedtubular member 31, the opposite end of which is adapted to receive a tubular extension ,32 on the repro- "du'ce r 15. This end of the tubular member '31 ,issplit and provided with cars 33 which may be tdrawn together by a screw- 34 in order to-eaus'e the member 31 to grip the ex-. tension 32, Theparts 30 and 29 areheld together by a pin 35, p ro.jecti ng through an opening in the enlajrg'ed'end 3'0; and into an- -opening in the-spherica'lly-formed end'of the section 29. With the parts thus constructed it will be seen that the r'eproducer 15 and the tubularmember 31 move in a straight yond the end of the section-'28 and this line parallel to the axis of the sound-record during the sound-reproduction and that at the same time the tone-arm 22 and the section 2911mm! abouta vertical axis, that is the axis 01 the pin 27. During these movements the spherically-formed end of the section 2!) turns freely within the ei'ilarged end 30 about the axisol the pin 35, and the section 2.) moves axially within the section 28 and in accordance with the changes in the distance between the pins 35 and 2?. The pin fits within the openings in the parts eonnectcd thereby loosely enough to permit of the slight vertical movement of the reproducer cttected by the lever l-l in moving the reproducerbetween operative and inoperative positions. The passageway for the soundwares from the l'cproducer lo the amplitying horn formed by the parts as above described, is comparatively frce l rom bends so that a good reproduction and one which is free from foreign sounds may be obtained. liurthermore, this tone-arm construction consists of a small number of parts which may be manufactured and assembled at very low cost.

Having described my invention what I claim as new therein and desire to secure by Letters Ilatent ot' the United States, is as follows:

In a talking-11inchinc, the combii'lation of a motor-box, a support for a cylindrical sound-record thereon, means for rotating said support, a reproducer movable in a- 'and curved intermediate its ends so that its opposite end is directed toward said support 'ingarin, and a pivotal connection between the last=nained end of said tubular member and one end of said tubular section, substantially as set forth. 1 This specification signtii and witnessed this 26th day of Fel-nruary, I909.

\Vitnesses: I

JlMIL Sonuou, II. M tinnsou mom 

